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Mawbyite

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Formula:
Pb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
Colour:
Orange-brown, red-brown
Lustre:
Adamantine
Hardness:
4
Specific Gravity:
5.53 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 1989 by Allan Pring E. Maud McBriar and William Birch in honor of Sir Maurice Alan Edgar Mawby (August 31, 1904, Broken Hill, Austalia - August 4, 1977, East Melbourne, Australia) for his contribution to the Australian mining industry and expertise in the minerals from Broken Hill. He was a metallurgist and mining executive. He identified 17 species from Broken Hill that had not previously been reported from there. He was knighted in 1963.
Dimorph of:
Tsumcorite Group.
The monoclinic dimorph of Carminite.

May be confused with arsenbrackebuschite, also a Pb-Fe-arsenate, but which a much higher Pb content.


Hide all sections | Show all sections

Classification of MawbyiteHide

Approved
Approval Year:
1988
First Published:
1989
8.CG.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
40.2.9.4

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
20.5.16

20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb

Physical Properties of MawbyiteHide

Adamantine
Transparency:
Transparent, Translucent
Colour:
Orange-brown, red-brown
Streak:
Orange-yellow
Hardness:
Cleavage:
Distinct/Good
{001}
Fracture:
Conchoidal
Density:
5.53 g/cm3 (Calculated)

Optical Data of MawbyiteHide

Type:
Biaxial (-)
RI values:
nα = 1.940 nβ = 2.000 nγ = 2.040
2V:
Measured: 80° , Calculated: 76°
Max Birefringence:
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
relatively weak

Chemical Properties of MawbyiteHide

Formula:
Pb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
IMA Formula:
PbFe3+2(AsO4)2(OH)2

Crystallography of MawbyiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 9.05 Å, b = 6.27 Å, c = 7.58 Å
β = 114.57°
Ratio:
a:b:c = 1.443 : 1 : 1.209
Unit Cell V:
391.17 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.647 (100)
4.458 (30)
3.245 (100)
3.136 (30)
2.860 (40)
2.724 (70)
2.546 (50)

Type Occurrence of MawbyiteHide

General Appearance of Type Material:
"dogtooth" crystals to .15 mm
Place of Conservation of Type Material:
South Australian Museum and Museum of Victoria
Geological Setting of Type Material:
Oxidized granular spessartine-quartz rock in a zone of several cubic meters.

Synonyms of MawbyiteHide

Other Language Names for MawbyiteHide

German:Mawbyit
Russian:Мобиит
Simplified Chinese:羟砷铅铁矿
Spanish:Mawbyita
Traditional Chinese:羥砷鉛鐵礦

Relationship of Mawbyite to other SpeciesHide

Other Members of this group:
CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
TsumcoritePbZn2(AsO4)2 · 2H2OMon.
YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
Segnitite3 photos of Mawbyite associated with Segnitite on mindat.org.
Mimetite3 photos of Mawbyite associated with Mimetite on mindat.org.
Duftite1 photo of Mawbyite associated with Duftite on mindat.org.
Adamite1 photo of Mawbyite associated with Adamite on mindat.org.
Beudantite-Segnitite Series1 photo of Mawbyite associated with Beudantite-Segnitite Series on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CG.05CassidyiteCa2(Ni2+,Mg)(PO4)2 · 2H2OTric.
8.CG.05CollinsiteCa2(Mg,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05FairfielditeCa2(Mn2+,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2OTric.
8.CG.05MesseliteCa2(Fe2+,Mn2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric.
8.CG.05β-RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
8.CG.05HilliteCa2(Zn,Mg)(PO4)2 · 2 H2OTric. 1 : P1
8.CG.10BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.15FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.15LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
8.CG.15ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2OMon.
8.CG.15CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCa(Ni,Fe3+,Co)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.20GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
8.CG.20ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
8.CG.20PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
8.CG.20LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.25Pottsite(Pb3xBi4-2x)(VO4)4·H2O (0.8 < x < 1.0)Tet. 4/m : I41/a
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

40.2.9.1TsumcoritePbZn2(AsO4)2 · 2H2OMon.
40.2.9.2HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
40.2.9.3ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.5.1CafarsiteCa5.9Mn1.7Fe3Ti3(AsO3)12 · 4-5H2OIso. m3 (2/m 3) : Pn3
20.5.2SchultenitePb(HAsO4)Mon. 2/m : P2/b
20.5.3DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.5.4BayldonitePbCu3(AsO4)2(OH)2Mon. 2/m : B2/b
20.5.5PhilipsbornitePbAl3(AsO4)2(OH)5 · H2OTrig.
20.5.6ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.5.7HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
20.5.8ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
20.5.9Caryinite(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3Mon. 2/m
20.5.10LudlockitePbFe3+4As3+10O22Tric. 1 : P1
20.5.11GabrielsonitePbFe(AsO4)(OH)Orth. mm2 : Pmc21
20.5.12CarminitePbFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
20.5.13SegnititePbFe3+3(AsO4)2(OH,H2O)6Trig. 3m (3 2/m) : R3m
20.5.14TsumcoritePbZn2(AsO4)2 · 2H2OMon.
20.5.15JamesitePb2Zn(Fe2+,Zn)2Fe3+4(AsO4)4(OH)10Tric.
20.5.17ArsenbrackenbuschitePb2Fe3+(AsO4)2(OH)

Fluorescence of MawbyiteHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MawbyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pring, A., McBriar, E.M., Birch, W.D. (1989) Mawbyite, a new arsenate of lead and iron related to tsumcorite and carminite, from Broken Hill, New South Wales.: American Mineralogist: 74: 1377-1381.
Kharisun, T.M.R., Bevan, D.J.M., Rae, A.D., Pring, A. (1997) The crystal structure of mawbyite, PbFe2(AsO4)2(OH)2. Mineralogical Magazine: 61: 685-691.
Krause, W., Belendorff, K., Bernhardt, H.J., McCammon, C.A., Effenberger, H., Mikenda, W. (1998) Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite. European Journal of Mineralogy: 10: 179-206.

Internet Links for MawbyiteHide

Localities for MawbyiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill
        • Broken Hill South Mine (BHS Mine; South Mine)
AM 1989, 1377-81
      • Broken Hill district
[UKJMM 19:28]
  • Western Australia
    • Ashburton Shire
      • Ashburton Downs Station
Australian J. Mineralogy 13(1),31-39(2007)
Austria
 
  • Lower Austria
    • Industrieviertel
      • Bucklige Welt
        • Wiesmath
Kolitsch, U., Bernhardt, F., Brandstätter, F. & Schachinger, T. (2010): 1658) Arsenopyrit, Bariopharmakosiderit, Baryt, Covellin, Jarosit, Karminit?, Mawbyit?, Mimetesit, Philipsbornit, Plumbojarosit, Pyrit, Pyromorphit, Schwefel, Segnitit, Sphalerit und Wulfenit vom Sperkerriegel bei Wiesmath, Bucklige Welt. Pp. 243-245 in Niedermayr et al. (2010): Neue Mineralfunde aus Österreich LIX. Carinthia II, 200./120., 199-260.
Bulgaria
 
  • Vratsa Oblast (Vratza)
    • Balkan Mts (Stara Planina)
Minceva-Stefanova, J. (2001). Arsenate minerals diversity in oxidation zones of the polymetallic stratabound deposits in Western Balkan Mountain. Comptes Rendus de l'Academie Bulgare des Sciences, 54(6), 39.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Dubí (Eichwald)
No reference listed
France
 
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
        • Échassières
Uwe Kolitsch (SXRD + SEM-EDS)
Le Règne Minéral, (33), 5-25.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Emmendingen
K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
      • Gengenbach
        • Haigerach valley
Wittern,A. (1995) Mineralien finden im Schwarzwald
      • Lahr
        • Reichenbach
          • Schuttertal
Lapis 21(12), 42-43 (1996)
      • Wolfach
        • Oberwolfach
          • Rankach valley
Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); Blaß, G. & Graf, H. W. (1997): Neufunde von bekannten Fundorten (19. Folge). - Mineralien-Welt, 8 (5), 32-36.
  • Saxony
    • Erzgebirge
      • Niederschlag-Bärenstein District
        • Bärenstein
          • Niederschlag
Lapis, 19 (4), 13-22+50.
      • Schneeberg District
[MinRec 33:351]
        • Wolfgang Maaßen Mine field
Neues Jahrb. Mineral. Mon. 558-576
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
Blaß, G., Fabritz, K. H., Mühlbauer, W. and Prachar, I. (1998): … Immer wieder Neues aus Lavrion (2). Mineralien-Welt 9 (6), 48-55 (in German).
No reference listed
Lapis No.7/8 1999 p.70-74; GRÖBNER, J. (2001): Roter Skorodit und weitere ungewöhnliche Arsenate: Die Mineralien des Abbaus 132 der Grube Christiana, Lavrion/Griechenland. Lapis, 26 (11), 13-21.
Namibia
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
XRD and EDS confirmed by Terry Seward.
Portugal
 
  • Viseu District
    • São Pedro do Sul
      • Manhouce
Analysed specimen found by Christian Rewitzer
Analysed specimen found by Christian Rewitzer
UK
 
  • England
    • Cumbria
      • Caldbeck Fells
Journal of The Russell Society, Volume 9, 2006
USA
 
  • Montana
    • Granite Co.
      • Philipsburg District (Flint Creek District)
        • John Long Mts
          • Black Pine Ridge
Martin Jensen and Tony Nikischer (2012) Some notes on the mineralogy of the Black Pine Mine, Granite County, Montana. Mineral News, 28, #6, 1-10.
Mineral and/or Locality  
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